BioStacks
Best for
Ingredients (4)
Calcium
100%Dose/day
1200 mg
Target
200–600 mg
Form
Standard
Boron
100%Dose/day
3 mg
Target
3–6 mg
Form
Premium
Vitamin D
40%Dose/day
400 IU
Target
1000–5000 IU
Form
Premium
Ostivone
100%Dose/day
600 mg
Target
200–600 mg
Form
—
Other Ingredients (7)
Calcium CarbonateBuffer
Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements
Croscarmellose SodiumDisintegrant
Cross-linked cellulose derivative used as a superdisintegrant
HypromelloseCapsule
Plant-derived capsule material from cellulose
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
How to Take It
Take it anytime
Take it with a meal containing fat — the vitamin D in it absorbs poorly without one.
With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron, Magnesium and Zinc
Split into 2 doses across the day
On the label
As a dietary supplement, take two tablets two times per day with food and water.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$18.57
Near the median of 660 calcium supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.